1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Tatiana [17]
3 years ago
5

Please help. I’ll mark you as brainliest if correct!

Mathematics
2 answers:
Delvig [45]3 years ago
6 0

Answer:

The two equations are

-2x-4y=20

-3x+5y=-25

multiply equation 1 by 5 and equation 2 by 4

-10x-20y=100

-12x+20y=-100

-22x=0

x=0

Substitute value in either equation

y=-5

So,option 1 is correct only one solution

Readme [11.4K]3 years ago
3 0

Answer:

\large \boxed{\sf \ \ x=0, \ \ y=-5 \ \ }

Step-by-step explanation:

Hello, please consider the following.

We have two equations:

(1) -2x - 4y = 20

(2) -3x + 5y = -25

5*(1)+4*(2) gives

   -10x - 20y -12x + 20y = 100 - 100 = 0

   -22x = 0

   x = 0

I replace in (1)

   -4y = 20

   y = -20/4 = -5

There is one solution x = 0, y = -5

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

You might be interested in
What is the area of the parallelogram shown?
o-na [289]

Step-by-step explanation:

heght x base

13 x 18

the hight can be measured by the paralel

7 0
2 years ago
Write y=-3/4 x-2 in standard form using integers.
jeyben [28]
Standard form is Ax + By = C

y = (-3/4)x - 2

Multiply both sides by 4.

4y = -3x - 8

Add 3x on both sides

3x + 4y = -8

Your final answer is 3x + 4y = -8.
8 0
2 years ago
PLEASE HELP! WILL MARK BRAINLIEST
Veseljchak [2.6K]

The value of x is 3, while the length of the rectangle is 30 units and the width is 24 units.

<h3>How to determine the dimensions?</h3>

The given parameters are:

Base = 5(x+3)

Height = 2(x+9)

Perimeter = 108

The perimeter of a rectangle is

P = 2 *(Base + Height)

So, we have:

2 *(5(x + 3) + 2(x + 9)) = 108

Divide both sides by 2

5(x + 3) + 2(x + 9) = 54

Open the brackets

5x + 15 + 2x + 18 = 54

Evaluate the like terms

7x = 21

Divide by 7

x = 3

Substitute x = 3 in Base = 5(x+3) and Height = 2(x+9)

Base = 5(3+3) = 30

Height = 2(3+9) = 24

Hence, the value of x is 3, while the length of the rectangle is 30 units and the width is 24 units.

Read more about perimeter at:

brainly.com/question/24571594

#SPJ1

5 0
1 year ago
En una ciudad se registró una temperatura de 12°c bajo cero a las 3:00 am si a las 7:00am del mismo dia la temperatura era tres
hjlf

Answer:

24°c

Step-by-step explanation:

Cuando se dice que la temperatura esta "mayor" significaria que esta aumentando y entorno subiendo a ser mas caliente. Siendo este el caso, si la temperatura a las 3:00 estaba a 12c bajo cero entonces a las 7:00 estaria a 24c. Esto es por que un aumento de tres vecesseria un aumento de 36 grados (12*3). 12c grados bajo cero seria un numero negativo y si sumamos estos numeros nos daria 24c grados.

-12 + 36 = 24

7 0
2 years ago
To fit in an existing frame, the length, x, of a piece of glass must be longer than 12 cm but not longer than 12.2 cm. Which ine
8090 [49]
The answer is A) <span>12 < x ≤ 12.2</span>
4 0
3 years ago
Read 2 more answers
Other questions:
  • What is the result of rotating the triangle 90° counterclockwise around the point (2, -1)?
    10·1 answer
  • What is the standard form for 200000+80000+700+6
    8·1 answer
  • It takes 53 minutes for 6 people to paint 6 walls. How many minutes does it take 20 people to paint 20 walls?
    14·2 answers
  • Fill in the boxes?? Thank youuu
    11·2 answers
  • What is the equation of the line that passes through the points (-7,-7) and (-7,4)
    12·1 answer
  • 3 t-shirts and 2 hats costs £14.
    13·1 answer
  • WORTH A BRAINLIEST
    10·1 answer
  • A cheerleading team practices each week for 375 minutes. The team practiced for 26 weeks during the year. How many minutes did t
    14·2 answers
  • Pls help me I give brainliest
    10·2 answers
  • If the reciprocal of 0.08 is 12.5 what is the reciprocal of 80​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!